Hi Yang,
>> I'd like to know what format of log that Gluu is using. Is it the syslog or something else?
We use log4j.
Location of logs are include [here](https://support.gluu.org/view/application-integration/what-logs-should-i-look-at-to-debug-the-gluu-server/1153)
>> Also, is there any kind of monitoring tools included within Gluu
No, nothing in-built inside Gluu Server yet. But we have a plan to add this feature very soon.